diff options
| author | Mike Frysinger <vapier@gentoo.org> | 2009-06-03 04:33:31 +0400 |
|---|---|---|
| committer | Mike Frysinger <vapier@gentoo.org> | 2009-06-12 14:12:01 +0400 |
| commit | 685a694f0653b7db49f663b2cd6953695214fb30 (patch) | |
| tree | 2b75af85e5be0f32d521e66c12a9412ea55fb5c4 | |
| parent | f1db88d2a7f1c92284e64f5dbb5c7a316a22576d (diff) | |
| download | linux-685a694f0653b7db49f663b2cd6953695214fb30.tar.xz | |
Blackfin: convert early_printk EVT init to a loop
The EVT registers are all contiguous in the memory map, so using a loop to
initialize them all rather than hardcoding the list results in much better
generated code (a hardware loop rather than a whole bunch of individual
loads).
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
| -rw-r--r-- | arch/blackfin/kernel/early_printk.c | 16 |
1 files changed, 3 insertions, 13 deletions
diff --git a/arch/blackfin/kernel/early_printk.c b/arch/blackfin/kernel/early_printk.c index c8ad051742e2..3302719173ca 100644 --- a/arch/blackfin/kernel/early_printk.c +++ b/arch/blackfin/kernel/early_printk.c @@ -178,25 +178,15 @@ int __init setup_early_printk(char *buf) asmlinkage void __init init_early_exception_vectors(void) { + u32 evt; SSYNC(); /* cannot program in software: * evt0 - emulation (jtag) * evt1 - reset */ - bfin_write_EVT2(early_trap); - bfin_write_EVT3(early_trap); - bfin_write_EVT5(early_trap); - bfin_write_EVT6(early_trap); - bfin_write_EVT7(early_trap); - bfin_write_EVT8(early_trap); - bfin_write_EVT9(early_trap); - bfin_write_EVT10(early_trap); - bfin_write_EVT11(early_trap); - bfin_write_EVT12(early_trap); - bfin_write_EVT13(early_trap); - bfin_write_EVT14(early_trap); - bfin_write_EVT15(early_trap); + for (evt = EVT2; evt <= EVT15; evt += 4) + bfin_write32(evt, early_trap); CSYNC(); /* Set all the return from interrupt, exception, NMI to a known place |